78773120 has 32 divisors (see below), whose sum is σ = 188318520. Its totient is φ = 31508992.

The previous prime is 78773117. The next prime is 78773159. The reversal of 78773120 is 2137787.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60902 + ... + 62181.

Almost surely, 2^78773120 is an apocalyptic number.

It is an amenable number.

78773120 is an abundant number, since it is smaller than the sum of its proper divisors (109545400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78773120 is a wasteful number, since it uses less digits than its factorization.

78773120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123102 (or 123090 counting only the distinct ones).

The product of its (nonzero) digits is 16464, while the sum is 35.

The square root of 78773120 is about 8875.4222434766. The cubic root of 78773120 is about 428.6728868787.

The spelling of 78773120 in words is "seventy-eight million, seven hundred seventy-three thousand, one hundred twenty".